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Working condition calibration system for industrial metering

A calibration system and labor technology, applied in the direction of test/calibration device, test/calibration volume flow, measurement device, etc., can solve the measurement deviation, do not consider the influence of on-site flow range measurement, and do not take into account the measurement of on-site pipeline conditions. impact, etc.

Active Publication Date: 2019-09-24
NANJING HANHUA FLUID TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current problems of this measurement method are: (1) The influence of the on-site pipeline conditions on the measurement is not considered; (2) The influence of the on-site flow range on the measurement is not considered
Since the metrological verification adopts a traceability system, which can be traced step by step, and the pipe network and operating conditions of the actual industrial site may have a huge gap with the metrological verification or calibration, so the on-site measurement often has a large deviation

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  • Working condition calibration system for industrial metering
  • Working condition calibration system for industrial metering
  • Working condition calibration system for industrial metering

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specific Embodiment approach

[0033] Specific implementation modes The cooling air measurement of a cement enterprise is taken as an example for illustration. According to the drawing of FA06 cooling air supply duct, the three-dimensional model is established as follows: Figure 24 It shows that the downstream outlet of the straight pipe section is the cavity under the cooling grate of the grate cooler, which belongs to the sudden expansion tube structure, and is represented in the form of cavity here. The basic parameters of the measurement site are as follows: medium: air; working temperature: normal temperature; working pressure: 10.2KPa; minimum flow rate 12000m 3 / h; common flow 18000m 3 / h; maximum flow rate 26100m 3 / h; scale flow 28000m 3 / h; flow direction: such as Figure 24 Shown; pipe diameter: 1450×650mm; working condition density: 1.23731kg / m 3 ;Dynamic viscosity: 1.81×10 -5 Pa. S. FA06 cooling air flow distribution law; using the maximum flow operating parameters provided by the site ...

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Abstract

The invention, which belongs to the technical field of instruments and meters, provides a working condition calibration system for industrial metering. The invention especially relates to a working condition calibration system for industrial metering. A method for determining a metering algorithm of the working condition calibration system for industrial metering includes: step one, carrying out physical modeling according to structural parameters of an industrial site; step two, carrying out discretization on a physical model; step three, carrying out computational fluid analysis on an on-site pipe network by using operational parameters provided by the industrial site; and step four, extracting data of the computational fluid analysis and regressing the data to a computing algorithm, being one of a signal processing part, under working conditions.

Description

technical field [0001] The invention belongs to the technical field of instruments and meters, and in particular relates to a working condition calibration system for industrial measurement. Background technique [0002] In the existing industrial site, the fluid in the pipeline first transmits the differential pressure signal to the secondary meter or flow computer through the differential pressure flowmeter, and after the differential pressure value is converted into flow by the secondary meter or flow computer, the flow value is then It is transmitted to the industrial control system DCS or PLC, and then the flow of the fluid in the pipeline can be measured. However, the current problems of this metering method are: (1) The influence of the on-site pipeline conditions on the metering is not considered; (2) The influence of the on-site flow range on the metering is not considered. The field flow range includes the flow range of the industrial field flow which is much high...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
CPCG01F25/10
Inventor 高玉娟
Owner NANJING HANHUA FLUID TECH CO LTD